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Water Treatment
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Published on Nov 19, 2015
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1.
Water treatment
Lakeview Wastewater Treatment Plant
2.
obtaining water
Lake Ontario
Private wells
Regionally-owned wells
Photo by
kevin dooley
3.
Conventional Method
4.
Chlorination
Primary disinfection of water
5.
Coagulation
Quick mixing of water with chemicals (alum)
6.
Flocculation
Encourages forming of solids (flocc)
7.
Sedimentation
Water slows down→ flocc settles out
8.
Dual media filtration
Filtered by gravity through filter
9.
GAC Filter
Water filtered by carbon pores in filter
10.
fluoridation
Safe amounts of chlorine & fluoride added
11.
Ozone, BACC, & Membrane Filtration
12.
Ozone
Breaks down organic particles
13.
BACC
Filtration through carbon bed
14.
Membrane filtration
Ultra-filtration removes microorganisms
15.
Storage
Reservoirs (e.g. Hanlan Reservoir)
Photo by
ROSS HONG KONG
16.
Distribution
Storage reservoir → high lift pumps
Freedermains (transport water from reservoir)
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